Bread wrapping machine



Oct. 18, 1938. G. s. BAXTER BREAD WRAPPING MACHINE Filed Ila rah 7, 1954 .le llxl gvwca vfo'b Gudiaue S, Baxter W Patented Oct. 18, 1938 BREAD WRAPPING MACHINE Gustave S. Baxter-{Detroit Mich assign'or, by I mesne assignments, to American Machine and Y Foundry Company 11 Claims.

. .This invention relates-to bread wrapping machines of the typeemployed where a waxed paper wrapper is appliedto-the loaves and the ends sealed, by the wax carried on thepaper- =Cnsiderable difficulty has been. experienced in hot 7 the pressure belts to becomeso hot that the wax would notset properly, thus'resulting in the wrappers not being sealed at the ends of the loaves.

The object, therefore, of this invention is to provide means for cooling the wax 'seals to insure proper sealing of the wrapper after the .wax has been heated.

Referring-to the accompanying drawing, which is made a part hereof and on which similar reference characters indicate similar-parts, Figure 1, is a plan view of themachine showing the cooling apparatus applied thereto.

FigureLZ is asection on. line 2-2 of Figure 1, and Q1 I,

Figure 3 is a section on line 3-3 of Figure 1. In the drawing reference character l0 indicates a conventional bread wrapping machine with a conveyor belt extending therefrom. Pressure belts |2 positioned on each side of the conveyor belt II are mounted on spaced pulleys |3 and M. The pulleys l3 and M are positioned on the vertical shafts |5 and I6 mounted in suitable supports I1 and I8. The outer supports l8 are adjustably mounted on the shafts IQ for tensioning the belts l2. The conveyor belt I I and the pressure belts |2' are driven by suitable mechanism, not shown. A pressure board or plate formed of any suitable material, preferably brass, is positioned against the belt l2 to hold it in contact with the ends of the wrapped loaves of bread. A similar pressure board or plate 2| is likewise positioned against the outer surface of the belt I 2. The board 20 is held in position by means of the spaced clamps 22 fixed to the shaft l9, being adjusted with respect to the clamps 22 by the bolts and nuts 23 on the ends of the clamps. The other board 2| is held in adjusted position by the bolts and nuts 24 attached to the shaft 9. The ends 25 of the pressure board 2| are beveled to prevent undue Wear on the belt l2 as it travels along the board.

Cooling means comprising the headers 26 fixed by any suitable means to the shaft I9 intermediate the pressure board 2| and the shaft are provided at each end' and are connected by 9.

Application March '1, 1934, Serial No. 714,508

series of cooling tubes 21 adapted to be positioned along the board 2| for cooling the belt 12 as'it moves along the board. The headers are provided with connections 28 adapted to be connected to a refrigerating system for circulatinga cooling me-. dium through the headers" and tubes.

The entire structure thus defined except the machine In and the conveyor belt H is supported by means of the arms 29 which are fixedto the shafts l9 and mounted on suitable mechanism-- to permitthestructure on e'achsid'e of the'belt II to be moved to and from each other depending on the length of the loaves or. articles being wrapped. The arms are of suflicient height and. are curved to permit the mechanism to 'ber moved over the belt II to accormnodate' rather short length articles- .The, operation of the mechanism above'fdescribed is quite obvious, th'e'belts I2 are fspaced apart according to the length of the loaves"be' M pp Loaves of bread are wrapped by the wrapping machine and are then projected on the moving conveyorsbelt H with the'ends of the loaves in contact with the belts l2. As the loaves travel along the conveyor belt with the ends in contact with the belts |2 which are chilled by contact with the pressure boards, the wax is hardened quickly even though the surrounding temperature conditions are very high. Brine or some other suitable refrigerating medium is circulated through the tubes to maintain the pressure boards in chilled condition.

It may be readily seen therefore, that by the use of refrigerating tubes a more perfect and satisfactory sealing operation is afforded. The mechanism described is rather simple, quite flexible in use and may be employed for various other purposes, other than wrapping bread, as for wrapping any articles or package requiring a waxed paper wrapper where a perfect seal is desired. 1

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. Cooling mechanism for a wrapping machine comprising means for conveying the wrapped article bearing hot seals, pressure belts contacting the ends of said article to cool the hot seals,

and refrigerating means including plate members having contact surfaces in contact with said belts along a considerable portion of the length thereof and engaging the article-contacting face thereof for chilling same to insure a perfect seal, said cooling means being adjustable toward and of various lengths.vv J

2. A-bread wrapper seal'cooling'mechanism: comprising a belt conveyor, laterally adjustable; endless beltspositioned along the edges of said belt conveyor at right angles thereto adaptedto engagethe ends of a wrapped loaf of bread for cooling the hot seals, rigidmeans for maintain Iing the loaf-contacting portion of said, belts-in position and-refrigerating coils mounted adiacent another portion oi! saidbelts tolma'intain: f

them in a chilled condition for properlysealing the wrapped loaves oi'bread.

"3. The, combination with a ting oi the' hotseals. I 1

4. In sealing'eqiiipment 'oi the characterde1 scribed, a pair of refrigerated cooling plates, an

endless belt associated with each of said platesrespectively, an'd'rigidly mounted members disposed to divert. an. intermediate length-'ofone stretch of each 'belt toward the other stretch thereof to provide space forth'e associated. plate;

5. The combination with a set of traveling members arranged ,to engage heated seals oi packages and absorb heat therefrom, '0! stationary plates engaging the operating faces of saidmembers, and means for chilling said plates whereby the operating faces oi-said members will I slide over said plates and the heat absorbed by;

said 'members fromthe heated package seals will be dissipated by said means.

6; The combination with a set of traveling endless belts, of separate sets of pulleysover which" saidbeltsare trained, one run of each beltbeing arranged to engage heated seals on the opposite amasse bread fwrapping machine 01 a conveyor for receiving the wrapped loavesbearing-hot seals,: belts positioned along the edges. ,o f {said conveyor contacting vthe ends,

,n ot-a package and absorb heat therefrom,

-and ref flserating'means engaging andlchilling the inoperative-runs of said belts wherebythe heat absorbed by the same from theheated package seals will be dissipated.

'15- The combination with a set oi traveling endless belts arranged jto,e'ngage the seals oi heat sealed packages to chillfiand setthe same, and

dry'cooling elements engaging'the package contactIngoperating-Iaces only of said belts to cool the same.

8. The'combination with a set of traveling endless' belts arranged to engage the seals of heat sealed packages to chill and set the same, and dry' cooling elements engaging the package-contacting operating faces only of said belts to cool -the same, said cooling elements comprising tanks oi saidloaves :for cooling same, pressure'means ,for maintaining said belts'in contact therewith; andreirigerating means positioned adjacent portions of the belts remote from the said pressure. means for chilling said belts to insure proper set-* having awall' engaging said faces of the belts, and; means 2 for circulati'ng a cooling medium 1 through saidtanks,

9;; A delivery'runway ior wrapping machines having .heat sealing means comprising a set oidry iraveling endless flexible members arranged tofenga'ge the seals of the heat sealed packages. I to chill andset the, same, and'co'oling means en gaging package contacting faces only of said members;

' '10 Thecombination with a setvoi dry travelling endless flexible members having operating runs arranged'to engage the seals oi heat sealed packages and having returning non-operating runs, and cooling means engaging the operating "faces only ,oi' the non-opera ting. runs of said members.

iii,11.;The'combination'with a set oi traveling nged .tovengage heated seals 01' packages-and absorb heat therefrom, of station- "ary means engaging theoperating'iaces of said members and cooling the same whereby the opei-atingiaces of said members will slide over said :me nsia q the ,heat, absorbed by the same from the"; heated package seals will be dissipated. I GUBTAVE S. BAXTER. 

